Mucosal delivery (in ovo and oral) of chitosan nanoparticle-based subunit vaccine enhances resistance against Campylobacter jejuni colonization in broiler chickens.

This study examined the renoprotective effect of Piribedil against cyclophosphamide (CP)-induced nephrotoxicity through modulation of adenosine monophosphate-activated protein kinase (AMPK)/sirtuin-1 (SIRT1), phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt), mitogen-activated protein kinases (MAPKs), and Toll-like receptor-4 (TLR4)/NOD-like receptor protein-3 (NLRP3) pathways, as well as renal injury markers kidney injury molecule-1 (KIM-1) and neutrophil gelatinase-associated lipocalin (NGAL). Male rats were divided into four groups (n = 8). Controls received distilled water plus saline; the CP group received a single CP dose (200mg/kg, i.p.) on day 7; Piribedil groups received 15 or 40mg/kg/day for 10days with CP on day 7. Renal function, oxidative stress, inflammation, and injury markers (KIM-1 and NGAL) were assessed via biochemical assays, histopathology, immunohistochemistry, and quantitative real-time PCR (qRT-PCR). CP caused significant renal dysfunction, elevating blood urea nitrogen (BUN), serum creatinine (SCr), NGAL, and KIM-1, increasing oxidative stress (malondialdehyde [MDA], inducible nitric oxide synthase [iNOS]) and reducing nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1), and glutathione (GSH). CP also upregulated inflammatory mediators (interleukin-1β [IL-1β], interleukin-6 [IL-6], tumor necrosis factor-α [TNF-α], nuclear factor-κB p65 [NF-κB p65]) and enhanced TLR4, NLRP3, and MAPKs, while suppressing AMPK, SIRT1, and PI3K/Akt signaling. Piribedil reversed these changes, improving renal function, lowering oxidative and inflammatory markers, and normalizing BUN, SCr, KIM-1, and NGAL. Histology confirmed reduced renal damage. Piribedil effectively protects against CP-induced nephrotoxicity by modulating AMPK/SIRT1 and related oxidative and inflammatory pathways, supporting its potential use in drug-induced kidney injury.

Low-grade gliomas (LGG) are aggressive brain tumors with high rates of recurrence and poor prognosis. PSMC4, a proteasome subunit, plays a role in various cancers, but its function in LGG remains poorly understood. This study explores PSMC4's impact on LGG progression. PSMC4 expression in LGG patients was analyzed using data from TCGA, CGGA, and GEO. Kaplan-Meier and Cox regression models assessed survival outcomes. Gene Set Enrichment Analysis (GSEA) identified key pathways affected by PSMC4. Immune infiltration was evaluated using the TIMER database. In vitro, SHG44 cells were transfected with shRNA targeting PSMC4, and assays for cell proliferation, migration, clonogenicity, and invasion were performed. In vivo xenograft assays were also conducted. High PSMC4 expression was linked to higher tumor grade and poor prognosis in LGG patients. Kaplan-Meier analysis revealed shorter overall survival for patients with high PSMC4 expression. ROC curve analysis confirmed the diagnostic value of PSMC4 for predicting poor prognosis. GSEA identified pathways like Notch, Toll-like receptor, and VEGF signaling that may be regulated by PSMC4. In vitro, PSMC4 knockdown significantly reduced SHG44 and T98 cell proliferation, migration, and invasion, while clonogenic assays showed decreased colony formation. In vivo, PSMC4 knockdown led to smaller tumor volumes in xenograft models, confirming its role in tumor progression. PSMC4 overexpression promotes LGG progression and may be an independent marker of poor prognosis. Targeting PSMC4 can reduce tumor growth and metastasis, providing a promising strategy for LGG treatment. Further research on its regulatory mechanisms and clinical implications is warranted.

Paracellular transport is the primary pathway for the intact absorption of the egg white-derived peptide QIGLF. This study aimed to explore the paracellular absorption process of QIGLF in Caco-2 cells using 4D-FastDIA proteomics. A total of 147 differentially expressed proteins (DEPs) were identified. Gene Ontology enrichment analysis revealed that key DEPs, including GRHL2, ECT2, and MARVELD2 involved in apical junction assembly and tight junctions, as well as ARHGEF18 and EphA2 in the plasma membrane, participate in regulating the paracellular absorption of QIGLF. KEGG pathway analysis further indicated that Toll-like receptors and nuclear factor-kappa B-signaling pathways, along with the phosphatidylinositol signaling system, were closely associated with this absorption process. Altogether, the findings of this study demonstrate that QIGLF may alter the expression or subcellular localization of tight junction proteins through these signaling pathways, thereby modulating intestinal tight junction permeability and facilitating its paracellular absorption.

DC-SIGN+ macrophages alleviate metabolic dysfunction-associated steatotic liver disease via fine-tuning TLR4 signaling and inflammatory secretory profiles.

The O-acetylation on phage tail-spike protein digested penta-saccharide from Acinetobacter baumannii SK44 plays a critical role in triggering pro-inflammatory immune response.

Study on the mechanism of Sangbaipi Decoction in treating acute lung injury via the inflammasome NLRP3 signaling pathway.

MD2 mediates COPD pathogenesis by inducing airway inflammation and ferroptosis through the TLR4/MyD88 pathway.

Homopterocarpin alleviates methoxychlor-induced hepatotoxicity via modulating thioredoxin/peroxiredoxin and TLR4/MyD88 pathway: A comprehensive biochemical, histopathological, and computational analysis.

Activation of TLR4-NF-κB signaling in renal tubular epithelial cells facilitates renal allograft fibrosis by inhibiting peroxisome biogenesis.

Mimicking gingival endotoxin tolerance to modulate immune balance for tumor postoperative wound management.

Inflammation in Pregnancy: Key Drivers, Signaling Pathways and Associated Complications.

Structural characterization and immunomodulatory activity of a glucuronoarabinogalactooligosaccharide-complex pectin from the fruits of Aralia elata (Miq.) Seem.

Generation of a shelf-stable, broadly-reactive influenza vaccine formulated with TLR4, TLR7/8, or TLR9 stimulating adjuvants.

Impact of low and high lipopolysaccharide doses on the early expression of immune related genes and transcription factors in chicken macrophage-like HD11 cells.

Computational insights into TLR4/MD2 interactions with dengue NS1 proteins: Serotype-specific binding and immune response.

Computational simulation and experimental study on the mechanism of yishen gushu formula in treating osteoporosis.

Repression of RIPK1 kinase by INPP5D inhibits expression of diverse proinflammatory mediators and late-onset Alzheimer's disease risk factors.

Deciphering Sjögren's disease: New insights and perspectives extend from advanced omics approaches and immunology.

Pathological alterations and immunohistochemical expression variations of TLR-4 in the liver, spleen and kidneys of cultured O. niloticus and M. Cephalus in relation to bacterial infection.